ROTARY SHAFT BEARING LUBRICATING METHOD AND ROTARY SHAFT TEMPERATURE CONTROLLING METHOD USING THIS METHOD

摘要

PROBLEM TO BE SOLVED: To prevent the generation of excessive energy from a lubricant supply device so as to suppress temperature increase to minimum by suppressing turbulence of lubricant in a bearing unit and preventing an oil pump from discharging excessive oil unavailable for lubrication. ;SOLUTION: A driving motor 8 is driven by means of an inverter at a selected number of revolutions when a power source of a lubricant supply device is turned on, and lubricant is fed out by means of an oil pump 5 at a selected discharge ratio of 1800 cc/min so as to be fed to a spindle bearing unit 1 from a supply flow passage 11 by a proper quantity for eliminating turbulence due to stirring. Then, the lubricant, which lubricated the spindle bearing unit 1, is heated because it takes the heat generated in lubrication while lubricating the bearing, and the oil pump 5 is prevented from discharging excessive oil, which not used for lubrication, so that the generation of excessive energy from the lubricant supply device is prevented, and the oil raised in temperature is returned to an oil tank 7.;COPYRIGHT: (C)1999,JPO